How to switch back från Arabic?

Hello! Please, help me. I've got everything in Arabic in Lyx and I cannot get back to English. I could find the language in the Tool menu, but it doesn't help. / Ivan

How to change language?

Hello! My Lyx became Arabic and I don't know how can I switch back to English or Swedish. /Ivan

Latex is not installed

Hello' I have just installed Lyx and Iűve got en error-message during the installation that Latex couldn't be installed. I use Vista. Can anybody give me an advice what I can do to install Latex posteriorly on the right place?